Over the past few weeks, we've had another round of vendors joining us. It is stated in the terms of service that vendors are not allowed to promote their businesses/services on these message boards.
It specifically states:
No soliciting of any kind on the message boards or in the chat room -- it is neither allowed nor appreciated by the community. If you are interested in advertising opportunities, please contact salesinfo@theknot.com Wedding professionals involved in a wedding-related enterprise cannot post any information on The Knot message boards, even if offering services free of charge.